Cutter chain



1,556,992 M. P. HOLMES CUTTER CHAIN Filed March 6, 1919 Patented Oct.13, 1925 UNITED STATES- PATENT OFFICE.

MORRIS P. HOLMES, OF CLAREMO'NT, HAMPSHIRE, ASSIG-NOR '1O SULLIVANMACHINERY COMPANY, A. CORPORATION OF MASSACHUSETTS.

cu'r'rnn 01mm.

Application filed March 6, 1919. Serial No. 281,029.

Toall whom it may concern: I

Be it known that I, Monnrs P. HoLMns, a citizen of the United States,residing at Claremont, in the county of Sullivanand State of NewHampshire, have invented certain new and useful Improvements in CutterChains, of which the following is a full, clear, and exactspecification. My invention relates to cutter chains.

It has for its object to provide an improved cutter chain, and moreespecially, while not limited thereto, an improved cutter chain adaptedto use on a mining machine. A further object of my invention. is toprovide an improved link in such a chain whereon a cutter bit or aplurality of the same may be carried inan improved manner and adjustedinto a plurality of cutting positions at the same time that anexceedingly simple, positive, and rugged construction is retained. Theseand other objects and advantages of my improved construction will,however, hereinafter more fully appear.

In the accompanying drawings I have shown for purposes of illustrationseveral embodiments which my invention may as-,

sume in practice.

In these draw1ngs,- Fig. 1 1s a side elevation, partlally 1n section,showing a cutter chain constructed in accordance with my improvement.

Fig. 2 is a partial plan view of the same.

Fig. 3 is a sectional view taken on line 33 of Fig. 1.

Fig. 4 is a sectional View of another form of my invention, wherein aplurality of bits iscarried by a single link.

Fig. 5 is a plan view of this form of I the same.

Fig. 6 is a detail sectional view taken on line 6-6 of Fig. 4E.

Fig. 7 is a perspective of the adjustable locking member. Y

Fig. '8 is a perspective ofanother form of said member.

In this illustrative construction it will be observed that the cutterchain includes a plurality of sets of links 1 and 2, each set hereinbeing pivotally connected at 3. As shown, the links 2 alternate with thelinks 1 and are the cutter links or cutter carrying elements, althoughobviously any desired arrangement or sequence of links may be used.

In my improved construction the links 2 are provided with upwardlydisposed integral extensions having longitudinally disposed recesses 5therein, these recesses here1n being shown as of cylindrical crosssection. In these recesses are disposed cylindrical extensions 6oneccentrically disposed cylindrical locking members 7. As shown, theseextensions 6 are provided with threaded bores 8 adapted to receivescrews 9 the shanks of which extend through suitable registeringapertures 10 in the vertical wall of the member 4 so that when the heads11 on the shanks of the screws 9 are adj usted the members 7 may berigidly clamped to the members l. In my improved construction, it willalso be observed that the members 7 are slotted transversely, as at 12,the slot, as herein, preferably extending also through the inner end ofthe extension 6. Attention is also directed to the fact that the inneredge of the member 4 is provided with a plurality of slots 13, which maybe provided in any desired relation or number, herein three, andrelatively inclined, one being disposed vertically and the others beingdisposed angularly on opposite sides of the same. As shown, these slots13 are adapted to register with the slot 12 in the member 7 in differentrotary positions of the latter relative to the member 4, and cooperatewith the slot 12 in forming a plurality of slots adapted to receive ausual cutter bit.

14. As a result of this construction, it will be noted that, as shown inFig. 3, the bit may be placed in any desired position of a plurality ofpositions, and that the same is adjustable longitudinally of thecooperating slots or freely removable therefrom when the screw. 9 isreleased, and clamped firmly in position when this screw is tightened.Attention is here also directed to the fact that the sides of the links2 are cut away, as shown at 15, in such a manner as to permit freelateral movement of the inner ends of the cutter hits as the latter areadjusted angularly relative to the member 4.

In Figs. 4 to 7 of the drawings it will be noted that I have illustratedanother form of the invention just described. In this-construction, itwill be observed that the cutter bit carrying link 16 is provided withan elongated, upwardly extending cylindrical portion 17 transverselyslotted at 18 at herein shown at 24 and 25, on the opposite ends thereofand disposed at an angle one to the other, herein at right angles,although obviously the number and the angles of the slots may be variedas desired. In this construction it will be observed that the member 20is also slotted transversely at 26 by intersecting V-s lots, as shown inFig. 6, in such a manner as to enable the shanks of the cutter bits topass therethrough between oppositely disposed longitudinally extendingportions 27 thereof -of V-shaped cross section. As a result of thisconstruction, it will be observed that a plurality of bits may be used,one bit being adjustably but firmly clamped in the slot 24 and the othersimilarly clamped in the slot 25 as the screw 22 is adjusted in onedirection,

. and both bits being released when the screw is turned in tlfe oppositedirection. It will also be observed that due to the positive clampingaction of the member 20, slots in the member 17 which correspond to theslots 13 may be omitted under certain circum stances if desired.-

In Fig. 8 Il ave illustrated a form of construction of ea ier theelements of a chain of the general type just described which is adaptedto use with the other elements thereof to provide a wider range ofadjustment. In this construction, it will be noted that the member 23 isdivided transversely into two parts 28, 29, each having a serrated edge3Q. As a result of this construction, it will be: observed that an evenwider variation in adjustment may be obtained by sim ply varying theposition of one of the members 28, 29 relative to the other. It willalso be noted that in each position the parts are securely clamped, theserrated portions in terlocking and the clamping means being of the'sameconstruction as described above.

By my improved construction, it will be observed that a wide variety ofpositions of various adjustments" make it possible to change theposition of the cutter bits and thereby vary the effect of the chain, itis also possible to clamp the bits rigidly in each of their operativepositions and remove the same from the chain for sharpening or the like,with great facility and whenever desired. Attention is also particularlydirected to the fact that my improved construction is of an exceedingly.rugged and simple character adapted to long life in service These andother advantages of my in-- vention will, however, be clearly apparentto those skilled in the art. I

WVhile I have in this application specifically described certainspecific embodiments which my invention may assume in practice, it is tobe understood that these forms are shown for illustrative purposes onlyand that the invention may be modified to assume various forms withoutdeparting from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is: 1 g

1. In a cutter chain, a cutter link having .a lateral extension-thereon,and means for rigidly clamping aplurality of cutter bits thereto each ina plurality of angular positions.

2. In a cutter chain, a cutter link having a lateral extension thereon,and means for rigidly clamping a plurality of cutter bits thereto, onein a plurality of angular positions relative to the other.

3. In a cutter chain, a cutter link having a lateral extension thereon,and means for rigidly clamping a plurality of cutter bits thereto at aplurality of different angular positions relative to each other.

4. In a cutter chain, a cutter link having a lateral extension thereon,and means including an adjustable slotted bit receiving member forrigidly clamping a-plurality of straight shanked cutter bits thereto ina plurality of angular positions.

5. In a cutter chain, a cutter link having a lateral extension thereon,and means for clamping a plurality of laterally disposed straightshanked cutter bits thereon includ ing a transversely slotted .angularlyadjustable member.

6. In a cutter chain, a cutter link having a lateral extension thereon,and means for clamping a plurality of laterally disposed cuttera bitsthereto including bit receiving means having transverse bit receivingslots opening through the opposite end surfaces thereof.

' 7 In a cutter chain, a cutter link having' a lateral extensionthereon, means for clamping a plurality of laterally disposed cutter"bits thereto including bit receiving means having transverse bitreceiving slots at the opposite ends thereof, and means whereby theangle between said slots may be varied.

, 8. In a cutter chain, a cutter link having a transversely slottedlateral extension thereon, a rotatively adjustable member disposed inthe slot therein and having transve'rsely extending cutter bit slots.and means --for rigidly clamping said member to said extension.

9. In a cutter chain, a cutter link having a transversely slottedlateral extension thereon, an adjustable member disposed in the slottherein and having transversely extending cutter bit slots, and meansforrigidly clamping said member to said extension inany one of aplurality of difl'erent angular positions.

10. In a cutter chain, a cutter link having a longitudinally boredlateral extension thereon, a transversely slotted member re ceivable insaid bore, and cooperating means extending through said slotted memberand into said bore for rigidl clamping said member to said link in a purality of diflerent angular positions. j

11. In a cutter chain, a cutter link having a transversely slottedlateral extension thereon, a transversely slotted memberreceivable inthe slot therein and insertable therein and removable therefrom. byrectilinear movement perpendicular to the longitudinal axis of Saidlink-{and means extend- .larly relative to another, and means ingaxially of saidextension and said member for'jrigidly clamping saidmember to said link.

12. In a cutter chain, a cutter link, a plurality of cutter bits, amounting therefor in said link. comprising means for adjusting one ofsaid bits angularly relative to another, and means for rigidly clampingsaid elements.

13. In a cutter chain, a cutter link, a plurality of cutter bits, meansincluding interlocking elements for adjusting one of larly relative toanother, and

Said bits an means for c amping said elements together.

14. In a cutter chain, a cutter link, a plurality of cutter bits, meansincluding intera lateral extension thereon, a plurality 0 bits mountedinvsaid extension in longitudinally spaced relation and arranged so thattheir projections on a plane perpendicular to the direction of travel ofsaid link make 1 an angle, and coaxially arranged elements contro lablewholly from one end of said for clamping said several bits to said Intestimony whereof I atlix my signature.

' MORRIS"P. HOLMES."

